St. Clair, Michigan Weather
Solstice approaches — longest light. Day 88 of spring. Read this microseason across nine climate regions →
St. Clair weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 15Overcast——73°50°—
- TuesdayJun 16Rain87%0.37″76°55°+3°
- WednesdayJun 17Heavy Showers87%1.6″68°52°-8°
- ThursdayJun 18Showers80%0.10″71°55°+3°
- FridayJun 19Heavy Drizzle32%—66°51°-5°
- SaturdayJun 20Light Drizzle17%—69°48°+3°
- SundayJun 21Overcast25%—64°52°-5°
AQI 26 (Good), driven by Ozone. AQI flat over the last 6 hours (within ±4 points).
OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion.
Trends
Seven days of AQI and PM2.5.
Hourly air-quality data from the Copernicus Atmosphere Monitoring Service, charted across the past and next several days. Dashed lines mark the AQI breakpoints at 50 (Good → Moderate) and 100 (Moderate → Unhealthy for Sensitive Groups).
A summer fog for fair, a winter fog for rain.
- Moonrise
- 5:49 AM
- Moonset
- 9:28 PM
- In sign
- ♊︎ Gemini
Solstice approaches — longest light
St. Clair at a glance
- Today vs. normal: 22°F below the seasonal normal for this latitude
- Last frost: May 3 (climatological average for this latitude)
- Microseason: Jun 11–15
- Planting window: Stake and prune tomato suckers. Watch for squash vine borers.
15-Day Forecast — St. Clair
- Mon73°50°4%
- Tue76°55°87%
- Wed68°52°87%
- Thu71°55°80%
- Fri66°51°32%
- Sat69°48°17%
- Sun64°52°25%
- Mon68°50°28%
- Tue74°52°13%
- Wed78°55°16%
- Thu73°58°29%
- Fri71°55°23%
- Sat79°55°48%
- Sun83°64°35%
- Mon81°70°29%
Forecast data from Open-Meteo (CC BY 4.0).
Right now in the garden
Peak growing season
As of June 15, the growing season is at its peak — frost is months away. Continue succession-planting beans and summer squash. Start fall brassicas (broccoli, cabbage, kale) from seed indoors for transplanting in late summer.
SPC Convective Outlook
Storm Prediction Center — St. Clair
SPC has placed St. Clair in the Marginal Risk category for severe thunderstorms tomorrow.
- TODAYNONENo severe risk
- TOMORROWMRGLMarginal Risk
- DAY 3TSTMGeneral Thunderstorms
Isolated severe storms possible. Limited threat for hail or damaging wind.
Source: NOAA / NWS Storm Prediction Center categorical convective outlook. Outlooks are re-issued multiple times per day; this page reflects the most recent SPC polygons covering the city’s coordinates.
ZIP codes in St. Clair
- 48079